CN107976608A - A kind of fault location system for distribution lines and method - Google Patents
A kind of fault location system for distribution lines and method Download PDFInfo
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- CN107976608A CN107976608A CN201711160444.1A CN201711160444A CN107976608A CN 107976608 A CN107976608 A CN 107976608A CN 201711160444 A CN201711160444 A CN 201711160444A CN 107976608 A CN107976608 A CN 107976608A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- Locating Faults (AREA)
Abstract
The application is on a kind of fault location system for distribution lines and method, system includes harvester, starting element, data processing equipment and output device, harvester includes punching traveling wave sensor and wireless senser, punching traveling wave sensor is connected by coaxial cable with wireless senser, signal is transferred to starting element and data processing equipment by wireless senser respectively, data processing equipment passes to output device after handling signal, when the activated element of signal is determined as fault-signal, starting element transmits signals to output device through data processing equipment.System and method in the embodiment of the present application are simple in structure, facilitate operator to be installed, and are combined using traveling wave method with being wirelessly transferred, and are conducive to improve fault location precision.
Description
Technical field
This application involves Distribution Network Equipment technical field, more particularly to a kind of fault location system for distribution lines and method.
Background technology
Power distribution network is by overhead transmission line, cable, shaft tower, distribution transformer, disconnecting switch, reactive-load compensator and some are attached
Belong to facility composition, the critical network for distributing electric energy effect is played in power network.Power distribution network once breaks down, can be to power distribution system
System causes very big loss, and therefore, when distribution line breaks down, distribution line failure is positioned so that makes failure in time
Solved in time, be a major issue.
At present, positioning generally use distribution line failure positioner, tool are carried out to distribution line failure in power distribution network
Body, this device carries out fault detect using impedance method, when power distribution network breaks down, is carried out recording by collecting unit and is incited somebody to action
Signal is transmitted to host computer system, host computer system measurement voltage and electric current by optical cable or connection, so as to obtain trouble point to survey
The impedance at end is measured, recycles line parameter circuit value to establish fault model, fault distance is got by calculating, is realized to distribution line event
Barrier is positioned.
However, in current distribution line failure positioner, due to carrying out fault detect using impedance method, impedance method without
Method eliminates the influence of the parameter such as transition resistance existing for earth fault, causes the positioning accurate that fault location is carried out using this method
Spend low, accuracy is inadequate, and impedance method is complicated, is not easy to apply and is not suitable for failure in long distance powedr transmission power distribution network and determines
Position.In addition, after determining abort situation by impedance method in current distribution line failure positioner, by current signal at failure
It is this to carry out signal biography by the way of electric wire is spread or voltage signal is transmitted by wire cables such as optical cable or connections
It is defeated so that signal is easily influenced be subject to extraneous factor, and efficiency of transmission is low.
The content of the invention
To overcome the problem of fault location accuracy is low, effectiveness is low present in correlation technique, the application carries
For a kind of fault location system for distribution lines and method.
A kind of fault location system for distribution lines, including harvester, starting element, data processing equipment and output dress
Put, the harvester includes punching traveling wave sensor and wireless senser, and the punching traveling wave sensor, which is socketed in, matches somebody with somebody
It is used to gather the signal on distribution wire on electric wire, the wireless senser is arranged at the inside of the harvester, the punching
Formula traveling wave sensor is connected by coaxial cable with the wireless senser, and the harvester will by the wireless senser
Signal is transferred to starting element and data processing equipment respectively, and the data processing equipment passes to institute after handling signal
Output device is stated, when the activated element of signal is determined as fault-signal, the starting element is by signal through data processing equipment
It is transferred to output device.
Alternatively, the data processing equipment includes high-speed data treatment element and central processing unit, the harvester
Signal is transferred to starting element and the high-speed data treatment element, the high-speed data respectively by the wireless senser
Processing unit is sent to the central processing unit, the central processing unit and the output device after data are carried out with preliminary treatment
Connection, the wireless senser are also connected by the starting element with the central processing unit.
Alternatively, the high-speed data treatment element includes：A/D converter, fpga logic circuit control unit, storage
Device, microcontroller and optical coupling isolator, the A/D converter carry out signal A/D conversions and by the transformed signal transmission of A/D
To memory and microcontroller, the memory the transformed signals of A/D are stored and with fpga logic circuit control unit
Interact, the microcontroller carries out A/D transformed signals preliminary treatment and carried out with fpga logic circuit control unit
Signal is fed back to A/D converter by interaction, the fpga logic circuit control unit, the microcontroller also by the optocoupler every
It is connected from device with the central processing unit.
Alternatively, the central processing unit is DSP series TMS320C5545 chips.
Alternatively, the central processing unit is also connected with a mass storage.
Alternatively, voltage suppression and divider, the coaxial electrical are provided between the wireless senser and coaxial cable
Cable is also connected with an arrester.
Alternatively, the wireless senser is transmitted using GPRS signals, and the wireless senser supports MODBUS
Agreement.
A kind of distribution line failure localization method, it is characterized in that, the described method includes：
Judge whether distribution line breaks down according to current break situation in distribution line；
When distribution line breaks down, the failure wave-recording signal in distribution line is obtained by traveling wave method；
The failure wave-recording signal is transmitted to data processing equipment by way of being wirelessly transferred；
Data processing equipment analyzes and processes the failure wave-recording signal, obtains accident analysis signal and to failure point
Analysis signal is stored；
According to the request of client, the accident analysis signal is sent to client.
Alternatively, the data processing equipment includes high-speed data treatment element and central processing unit.
Alternatively, after the data processing equipment analyzes and processes the failure wave-recording signal, accident analysis is obtained
Signal is simultaneously stored, including：
The high-speed data treatment element carries out preliminary treatment and storage to the failure wave-recording signal, and by after processing
Data sending is to central processing unit；
The central processing unit analyzes the data after high-speed data processing unit preliminary treatment, obtains accident analysis
Signal simultaneously stores accident analysis signal.
The technical solution that embodiments herein provides can include the following benefits：
The application provides a kind of fault location system for distribution lines, including harvester, starting element, data processing equipment
And output device, harvester include punching traveling wave sensor and wireless senser, punching traveling wave sensor, which is socketed in, matches somebody with somebody
It is used to gather the signal on distribution wire on electric wire, wireless senser is arranged at the inside of harvester, punching traveling wave sensor
Be connected by coaxial cable with wireless senser, harvester signal is transferred to respectively by wireless senser starting element and
Data processing equipment, data processing equipment pass to output device after handling signal, when the activated element of signal judges
For fault-signal when, signal is transferred to output device by starting element through data processing equipment, is believed failure by output device
Breath feeds back to operating personnel.When not having in the event of failure in distribution line in the embodiment of the present application, starting element is not triggered, and works as distribution
Starting element is triggered when breaking down in circuit.Judge whether break down in distribution line by setting starting element,
And the failure in distribution line is handled in time by data processing equipment.Set in the harvester of the embodiment of the present application
There are punching traveling wave sensor and wireless senser, fault-signal is acquired by punching traveling wave sensor and passes through nothing
Line sensor transmits signals to data processing equipment, and traveling wave method carries out fault location accuracy height, and device is simple, is easy to push away
Extensively, and the device applies also for fault location in long distance powedr transmission power distribution network.The use of wireless senser can avoid wired letter
Number transmission, be conducive to keep signal precision and improve signal transmission efficiency.
The application also provides a kind of distribution line failure localization method, including：According to current break situation in distribution line
Judge whether distribution line breaks down；Failure wave-recording signal in distribution line is obtained by traveling wave method；Failure wave-recording is believed
Number data processing equipment is transmitted to by way of being wirelessly transferred；Data processing equipment analyzes and processes failure wave-recording signal
Afterwards, obtain accident analysis signal and stored；According to the request of client, accident analysis signal is sent to client.This
Apply for that embodiment carries out fault location using traveling wave method, this method positioning accuracy is high, easy to spread.And nothing is used to signal
The mode of line transmission, can avoid wire signal from transmitting, and be conducive to keep the precision of signal and provide the efficiency of signal transmission.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The application can be limited.
Brief description of the drawings
Attached drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, can also obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structure diagram of fault location system for distribution lines provided by the embodiments of the present application；
Fig. 2 is the structure diagram of another fault location system for distribution lines provided by the embodiments of the present application；
Fig. 3 is the structure diagram of the embodiment of the present application high speed data handling component；
Fig. 4 is a kind of flow diagram of distribution line failure localization method provided by the embodiments of the present application.
Symbolic indication：1- punchings traveling wave sensor, 2- wireless sensers, 3- starting elements, 4- data processing equipments,
41- high-speed datas treatment element, 411-A/D converters, 412-FPGA logic circuits control unit, 413- memories, 414- are mono-
Piece machine, 415- optical coupling isolators, 42- central processing units, 5- output devices.
Embodiment
In order to clarify the technical characteristics of the invention, below by embodiment, and its attached drawing is combined, to this Shen
It please be described in detail.Following disclosure provides many different embodiments or example is used for realizing the different knots of the application
Structure.In order to simplify disclosure herein, hereinafter the component and setting of specific examples are described.In addition, the application can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relation between various embodiments are discussed and/or are set.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
Draw.The application eliminates the description to known assemblies and treatment technology and process to avoid the application is unnecessarily limiting.
The application in order to better understand, explains in detail presently filed embodiment below in conjunction with the accompanying drawings.
Embodiment one
Referring to Fig. 1, Fig. 1 is a kind of structure diagram of fault location system for distribution lines provided by the embodiments of the present application.
As shown in Figure 1, the fault location system for distribution lines in the embodiment of the present application mainly include harvester, starting element 3,
Totally four parts, harvester include punching traveling wave sensor 1 and wireless sensing again for data processing equipment 4 and output device 5
Device 2.Wherein, punching traveling wave sensor 1 is socketed on distribution wire, for gathering the signal on distribution wire, on usual distribution wire
Three-phase alternating current line, therefore a punching traveling wave sensor is all socketed with each phase of three-phase alternating current line, and wireless senser
It is arranged at the inside of harvester.
By coaxial cable between punching traveling wave sensor 1 and wireless senser 2, signal can be made using coaxial cable
Intensity and power suffered by loss greatly reduce, so as to improve the accuracy of sampled signal.
Wireless senser 2 is transmitted using GPRS signals, and the wireless senser 2 in the embodiment of the present application is supported
MODBUS agreements.Wireless senser 2 supports the distribution line failure positioning that MODBUS agreements are able to ensure that in the embodiment of the present application
System can support the equipment of multiple interfaces, including RS-232, RS-422, RS-485 and ethernet device, thus be conducive to be
System is promoted the use of.The setting of wireless senser 2 can avoid the operation of laying-out in wire transmission so that system structure is more
Add simplification, facilitate operating personnel to be installed, and by the way that signal is wirelessly transferred, extraneous factor can be reduced to signal
Interference and decay, be conducive to improve distribution line failure positioning accuracy.
With continued reference to Fig. 1, signal is transferred at starting element 3 and data by harvester respectively by wireless senser 2
Device 4 is managed, data processing equipment 4 passes to output device 5 after handling signal, when the activated element 3 of signal is determined as
During fault-signal, signal is transferred to output device 5 by starting element 3 through data processing equipment 4.The setting of starting element 3, is used for
Fault message is found in time, when not in the event of failure, starting element is not triggered, when breaking down in distribution line in distribution line
When starting element be triggered.The setting of starting element so that operating personnel can have found fault message in time, and be filled by exporting
Put and deal with time to failure.Starting element can be realized by the way of software.
In the embodiment of the present application data processing equipment 4 be used for signal is handled, when not breaking down, signal into
The normal processing of row, when a failure occurs it, data processing equipment 4 carries out fault location processing according to the triggering of starting element.
Fault message to be fed back by output device 5, output device is man-machine interface in the embodiment of the present application, including
Display and operation keyboard etc..Man-machine interface can be also used for the input that client carries out demand data according to demand.
Further, voltage is additionally provided with the embodiment of the present application between wireless senser 2 and coaxial cable to suppress and divide
Depressor, wherein, coaxial cable is also connected with an arrester.Voltage suppresses the setting with divider, can either measure industrial frequency AC
High pressure, and overvoltage can be suppressed, so as to protect fault location system for distribution lines.The setting of arrester, also can
Further function as the effect of protection fault location system for distribution lines.In addition, in the embodiment of the present application, coaxial cable is by arrester
Keep apart with Overvoltage suppressing and divider, influence of the thunder and lightning to Overvoltage suppressing and divider can be efficiently reduced.
Embodiment two
Referring to Fig. 2 on the basis of embodiment described in Fig. 1, Fig. 2 is another distribution wire provided by the embodiments of the present application
The structure diagram of road fault location system.As shown in Figure 2, in the fault location system for distribution lines of the present embodiment, at data
Reason device 4 is made of high-speed data treatment element 41 and central processing unit 42.Specifically, harvester passes through wireless senser 2
Signal is transferred to starting element 3 and high-speed data treatment element 4 respectively, high-speed data processing unit 41 carries out data preliminary
Send to central processing unit 42, central processing unit 42 after processing and be connected with output device 5, wireless senser 2 is also by starting member
Part 3 is connected with central processing unit 42.
Data processing equipment 4 is made of high-speed data treatment element 41 and central processing unit 42 in the present embodiment, high speed number
According to treatment element first to harvester by wireless senser 2 transmit come signal progress preliminary treatment, by the number after processing
According to retransmiting to central processing unit 42, data are further analyzed with judgement by central processing unit, so as to punching traveling wave
The data that sensor 2 collects carry out analysis comprehensively more accurately to be positioned to failure.Central processing unit 2 is filled with output
5 connections are put, accident analysis information can be transferred to client.In the present embodiment wireless senser 2 by starting element 3 with
Central processor 42 connects, and can obtain distribution line failure information in time, and fault message is handled.
The concrete structure of high-speed data treatment element 41 may refer to Fig. 3, from the figure 3, it may be seen that the embodiment of the present application high speed
Data handling component 41 mainly includes：A/D converter 411, fpga logic circuit control unit 412, memory 413, microcontroller
414 and 415 5 parts of optical coupling isolator.Wherein, A/D converter 411 is used to carry out A/D conversions to signal and turns A/D
Signal after changing is transferred to memory 413 and microcontroller 414, and memory is stored simultaneously for 413 pairs of transformed signals of A/D
Interacted with fpga logic circuit control unit 413, microcontroller 414 is used to carry out preliminary treatment to the transformed signals of A/D
And interacted with fpga logic circuit control unit 412, signal is fed back to A/D and turned by fpga logic circuit control unit 412
Parallel operation 411, microcontroller 414 are also connected by optical coupling isolator 415 with central processing unit 42.
A/D converter can use 120HZ A/D converters in the present embodiment, and punching traveling wave sensor is gathered
Signal is converted to the digital signal form comprising address.The setting of fpga logic circuit control unit 412, can be by memory institute
Information after the information and microcontroller of storage handle the transformed signals of A/D feeds back to A/D converter.
High-speed data treatment element 41 has been connected with central processing unit 42 by optical coupling isolator 415 in the present embodiment
Come, since optical coupling isolator has good electrical isolation capabilities and antijamming capability, signal-to-noise ratio can be effectively improved, so that
Improve the accuracy of distribution line failure positioning.
With continued reference to Fig. 2, central processing unit can use the TMS320C5545 chips of dsp system in the embodiment of the present application.
Further, central processing unit 42 is also connected with a mass storage in the present embodiment.This structure design, can make center
Data after the processing of processor 42 are effectively stored, and person easy to operation collects distribution line failure for a long time.
The part that the embodiment is not described in detail can refer to the embodiment one shown in Fig. 1, between the two can mutual reference,
No longer elaborate herein.
Referring to Fig. 4, Fig. 4 is a kind of flow diagram of distribution line failure localization method provided by the embodiments of the present application.
As shown in Figure 4, distribution line failure localization method in the embodiment of the present application, mainly includes the following steps：
S1：Judge whether distribution line breaks down according to current break situation in distribution line.
It can judge whether break down in distribution line by a starting element, usually work as and break down in distribution line
When, electric current can undergo mutation.In the case of electric current is normal, starting element is not triggered, and is opened when circuit abnormal or failure
Dynamic element is triggered.
S2：When distribution line breaks down, the failure wave-recording signal in distribution line is obtained by traveling wave method.
When breaking down in distribution line, the failure wave-recording signal in distribution line is obtained using traveling wave method, can be adopted
With the failure wave-recording signal in a traveling wave sensor, such as punching traveling wave sensor collection distribution line.In the present embodiment
Traveling wave method is existing travelling wave ranging method in the prior art.
After getting failure wave-recording signal, S3 is entered step：Failure wave-recording signal is transmitted by way of being wirelessly transferred
To data processing equipment.
After getting failure wave-recording signal, by failure wave-recording signal transmission to data processing equipment, in order to follow-up pair therefore
Barrier recording signal carries out processing analysis, so that it is determined that abort situation., can be effective in the present embodiment by the way of being wirelessly transferred
The signal interference phenomenon produced in failure wave-recording signals transmission is avoided, is conducive to improve fault location precision.
Data processing equipment can use high-speed data treatment element and central processing unit in the present embodiment.
S4：Data processing equipment analyzes and processes failure wave-recording signal, obtains accident analysis signal and to failure point
Analysis signal is stored.
Specifically, step S4 includes following process：
High-speed data treatment element carries out failure wave-recording signal preliminary treatment and storage, and by the data sending after processing
To central processing unit；
Central processing unit analyzes the data after high-speed data processing unit preliminary treatment, obtains accident analysis signal
And accident analysis signal is stored.
S5：According to the request of client, accident analysis signal is sent to client.
Distribution line failure localization method and principle in the embodiment of the present application, in the embodiment shown in Fig. 1-Fig. 3
It is discussed in detail, details are not described herein.
The above is the optional embodiment of the application, for those skilled in the art,
On the premise of not departing from the application principle, some improvements and modifications can also be made, these improvements and modifications are also regarded as this Shen
Protection domain please.
Claims (10)
1. a kind of fault location system for distribution lines, it is characterized in that, including harvester, starting element (3), data processing equipment
(4) and output device (5), the harvester include punching traveling wave sensor (1) and wireless senser (2), the punching
Formula traveling wave sensor (1), which is socketed on distribution wire, to be used to gather the signal on distribution wire, and the wireless senser (2) is arranged at institute
The inside of harvester is stated, the punching traveling wave sensor (1) is connected by coaxial cable with the wireless senser (2),
Signal is transferred to the starting element (3) and data processing dress by the wireless senser (2) by the harvester respectively
Put (4), the data processing equipment (4) passes to the output device (5) after handling signal, when the activated member of signal
When part (3) is determined as fault-signal, signal is transferred to output device by the starting element (3) through data processing equipment (4)
(5)。
2. a kind of fault location system for distribution lines as claimed in claim 1, it is characterized in that, the data processing equipment (4)
Including high-speed data treatment element (41) and central processing unit (42), the harvester will by the wireless senser (2)
Described to be transferred to the starting element (3) and high-speed data treatment element (4) respectively, the high-speed data processing unit (41) is right
Data are sent to the central processing unit (42), the central processing unit (42) and the output device after carrying out preliminary treatment
(5) connect, the wireless senser (2) is also connected by the starting element (3) with the central processing unit (42).
3. a kind of fault location system for distribution lines as claimed in claim 2, it is characterized in that, the high-speed data treatment element
(41) include：A/D converter (411), fpga logic circuit control unit (412), memory (413), microcontroller (414) and
Optical coupling isolator (415), the A/D converter (411) carry out signal A/D conversions and are transferred to the transformed signals of A/D
Memory (413) and microcontroller (414), the transformed signals of A/D store the memory (413) and and fpga logic
Circuit control unit (412) interacts, the microcontroller (414) to the transformed signals of A/D carry out preliminary treatment and with
Fpga logic circuit control unit (412) interacts, and signal is fed back to A/ by the fpga logic circuit control unit (412)
D converters (411), the microcontroller (414) are also connected by the optical coupling isolator (415) and the central processing unit (42)
Connect.
4. a kind of fault location system for distribution lines as claimed in claim 2, it is characterized in that, the central processing unit (42) is
DSP series TMS320C5545 chips.
5. a kind of fault location system for distribution lines as claimed in claim 2, it is characterized in that, the central processing unit (42) is also
It is connected with a mass storage.
6. a kind of fault location system for distribution lines as claimed in claim 1, it is characterized in that, the wireless senser (2) with
Voltage suppression is provided between coaxial cable and divider, the coaxial cable are also connected with an arrester.
7. a kind of fault location system for distribution lines as claimed in claim 1, it is characterized in that, the wireless senser (2) is adopted
It is transmitted with GPRS signals, and the wireless senser (2) supports MODBUS agreements.
8. a kind of distribution line failure localization method, it is characterized in that, the described method includes：
Judge whether distribution line breaks down according to current break situation in distribution line；
When distribution line breaks down, the failure wave-recording signal in distribution line is obtained by traveling wave method；
The failure wave-recording signal is transmitted to data processing equipment by way of being wirelessly transferred；
Data processing equipment analyzes and processes the failure wave-recording signal, obtains accident analysis signal and accident analysis is believed
Number stored；
According to the request of client, the accident analysis signal is sent to client.
9. a kind of distribution line failure localization method as described in claim 8, it is characterized in that, the data processing equipment bag
Include high-speed data treatment element and central processing unit.
10. a kind of distribution line failure localization method as described in claim 9, it is characterized in that, the data processing equipment
After being analyzed and processed to the failure wave-recording signal, obtain accident analysis signal and stored, including：
The high-speed data treatment element carries out the failure wave-recording signal preliminary treatment and storage, and by the data after processing
Send to central processing unit；
The central processing unit analyzes the data after high-speed data processing unit preliminary treatment, obtains accident analysis signal
And accident analysis signal is stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711160444.1A CN107976608A (en) | 2017-11-20 | 2017-11-20 | A kind of fault location system for distribution lines and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711160444.1A CN107976608A (en) | 2017-11-20 | 2017-11-20 | A kind of fault location system for distribution lines and method |
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Application publication date: 20180501 |